Acer Travelmate 280 Service Guide

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 Keyboard
The keyboard has full-sized keys and an embedded keypad, separate cursor keys, two Windows keys and 
twelve function keys.
Special keys
Lock keys
The keyboard has three lock keys which you can toggle on and off.
Embedded numeric keypad
The embedded numeric keypad functions like a desktop numeric keypad. It is indicated by small characters 
located on the upper right corner of the keycaps. To simplify the keyboard legend, cursor-control key symbols 
are not printed on the...

Chapter 114
NOTE: If an external keyboard or keypad is connected to the computer, the Num Lock feature automatically 
shifts from the internal keyboard to the external keyboard or keypad.
Windows keys
The keyboard has two keys that perform Windows-specific functions.
Desired accessNum lock onNum lock off
Number keys on embedded 
keypadType numbers in a normal manner.
Cursor-control keys on embedded 
keypadHold Shift while using cursor-control keys. Hold Fn while using cursor-control 
keys.
Main keyboard...

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Hot Keys
The computer employs hot keys or key combinations to access most of the computer’s controls like screen 
contrast and brightness, volume output and the BIOS Utility.
To activate hot keys, press and hold the Fn key before pressing the other key in the hot key combination.
Hot KeyIconFunctionDescription
Fn-
lHotkey help Displays a list of the hotkeys and their functions.
Fn-
mSetup Accesses the notebook configuration utility. 
Fn-
nPower Scheme Toggle Switches between the...

Chapter 116
The Euro symbol
If your keyboard layout is set to United States-International or United Kingdom or if you have a keyboard with a 
European layout, you can type the Euro symbol on your keyboard.
NOTE: for US keyboard users: The keyboard layout is set when you first set up Windows.  For the Euro 
symbol to work, the keyboard layout has to be set to United States-international.
To verify the keyboard type:
1.Click on Start, Control Panel.
2.Double-click on Regional and Language Options.
3.Click...

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 Launch Keys
Located at the top of the keyboard are five buttons. These buttons are called launch keys. They are 
designated as wireless LAN/Bluetooth , Web Browser button, mail button, P1 andP2. By default, P1 and P2 
are users programmable.  The Web Browser button, by default, is used to launch the internet browser The mail 
button is used to launch the e-mail application. The LED of the mail button will flash when the user has 
received an incoming email....

Chapter 118
Hardware Specifications and Configurations
System Board Major Chips
Item Controller
System core logic Intel ICH4
Super I/O controller Mitsubish 38857
Audio controller Cirrus CS4299XQ
Video controller Intel 845GL
Hard disk drive controller Embedded in Intel ICH4
Keyboard controller Mitsubish 38857
CardBus Controller OZ 6912T-U
RTC Intel ICH4
Processor (for TravelMate 230)
ItemSpecification
CPU type
Intel Celeron Pentium
® 4
CPU package  To 2.0GHz uFCBGA
CPU core voltage 1.7V
CPU I/O voltage...

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Above table lists some system memory configurations. You may combine DIMMs with various capacities to 
form other combinations.
2nd level cache control Always Enabled
Cache scheme control Fixed-in write back
System Memory
ItemSpecification
Memory controller Intel 845GL
Onboard memory size 0MB 
DIMM socket number 2 Sockets
Supports memory size per socket 512MB
Supports maximum memory size 1024MB
Supports DIMM type DDR-DRAM SODIMM
Supports DIMM Speed 266 MHz
Supports DIMM voltage 3.3...

Chapter 120
  Modem Interface
ItemSpecification
Chipset Ambit MDC module with Lucent modem controller
Fax modem data baud rate (bps) 14.4K
Data modem data baud rate (bps) 56K
Supports modem protocol V.90/V.92MDC
Modem connector type RJ11
Modem connector location Rear side
Floppy Disk Drive Interface
ItemSpecification
Vendor & model name Mitsumi D353G W/I BEZ
MCI JU-226A293
Floppy Disk Specifications
Media recognition 2DD (720KB) 2HD (1.2 MB, 3 mode) 2HD (1.44MB)
Sectors/track 9 15 18
Tracks 80 80 80
Data...

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CD-ROM Interface
ItemsSpecification
Vendor & Model Name Mitsumi SR-244W1
Performance Specification
Transfer rate  Read Sustained:
           1545~3600 KB/sec
Programmed I/O:
           16.7 MB/sec Max. (Mode 0~4)
Multi-word DMA:
           16.7 MB/sec Max. (Mode 0~2)
Ultra DMA:
           33.3MB/sec Max.
Access time (typ.) Random: 115 ms
Full Stroke: 250 ms
Rotation speed 5136 rpm
Data Buffer Capacity 128 KB
Interface IDE
Applicable disc format CD/CD-ROM(12cm,8cm), CD-R, CD-RW,...

Chapter 122
(*1) Average of Data read over the whole area from 00 min. 02 sec. 00 block to 59 min. 58 sec. 74 block more 
than    2000 times including latency and layered error correction time.
(*2) From 00 min. 02 sec. 00 block to 59 min. 58 sec. 74 block including latency and layered error correction 
time.
(*3) Disc:  MNSU-005
(*4) Average of Data read over the whole area from starting data recorded area (LBA:0) to maximum data 
recorded area (LBA:23197F), more than 2000 times including latency and...